Ball-bearing with a single row of balls.



c. G. S O DERLU ND. BALL BEARING WITH A SINGLE ROW 0F BALLS. APPLICATION FILED DECAL. 1914.

I 1,266,071. Patented 14,1918.

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npplication filedmecember linen: 's iaiirqrsraedai- To all whom it may concern:

' Be it knownthat- I, CARL -GUSTA'I. SoonR-= LUND, a subject of the King of Sweden; re siding at Gottenborg, in the county of Got-.

tenborg and Bohus and Kingdom of Sweden, have invented new and useful Improvements in and Relating to Ball-Bearings with a Single Row of Balls, of which the following is a specification.

This invention relates to ball bearings with a single row of balls which are movable in grooves formed in the outer race ring and in the inner race ring.

The object of my invention is to provide means for automatically removing from the bearing surfaces any alien particles such as dust, filings or the like which may not have been removed from the hearing when manufactured or which may have accumulated in the grooves, such particles or impurities having a tendency to wear, and scratch or cut into the bearing surfaces and to prevent the smooth running of the balls.

In carrying the invention into efiect I provide the outer race ring with one or more cut away portions or openings formed in the wall or walls of the race ring which opening or openings extend from the very bottom of the groove in said ring and slope outwardly to the side or sides of the ring. Preferably the opening or openings are situated at the lowermost portion of the bearing and each opening may be directed to only one side or to both sides. When situated at the undermost point of the bearing the opening or openings cause the particles or impurities to escape merely by the action of gravity, whereas an opening situated at a higher point will only serve the above mentioned purpose if assisted by centrifugal force.

The opening or openings may best be described as cutaway portions of the wall or walls of the groove, and as a consequence the bearing is freed from any spot suited to the accumulation of impurities or other alien particles injurious to the smooth working of the parts. Said particles will escape from the race immediately they reach the cutaway portion or opening and their removal may be assisted by a few drops of paraffin or the like introduced before the bearing is put into operation.

In the accompanying drawing gigure 1 is a side elevation of the bearing an Fig. 2 is a sectional view "-Fig. 3 is a sectional view of the same showing a double opening.

The bearing comprises as usual an inner ring or race 7) fixed on the shaft (1, an outer ring or race 0 and a set of balls 03 placed between the two rings and kept in place by a suitable cage Z. The balls run in grooves e, 7 formed respectively in the rings a, b. In accordance with this invention there is provided an opening or cut away portion 9 of a suitable length in the outer race ring this opening being at the lowermost portion of the ring and extending from'the verybottom of the groove 0 outwardly and downwardly to the sides of the ring, as shown in Fig. 2. The opening may extend to only one wall of the ring 0, as shown in Fig. 2, or it may extend to both side walls thereof as at Fig. 3, and openings may be provided at a plurality of points around the circumference ofthe outer ring. The halls are prevented from falling when passing the opening or openings 9 of the groove 6 by the cage Z.

Referring to Fig. 2 the opening or openings 9 also presents a convenient means for inserting or removing the balls, and this will be rendered very much easier if the inner ring or race 6 is also provided with a small opening is, sloping downwardly to the outermost circumference of the inner ring from the bottom of the groove 7 in said ring. By turning the inner ring 7) until its opening k is immediately above the opening 9 in the outer ring there will-be provided a spacious opening for inserting or removing the balls d and as the two openings 9 and 7c are extended entirely to the bottoms of their respective grooves e and 7, no force will be necessary for inserting the balls through the channel formed by the momentarily coinciding openings 9 and 70.

Having thus described my said invention what I claim and want to protect by Letters Patent is:

A ball bearing, comprising in combination, an outer race ring having a groove formed in the innermost surface thereof, an inner race ring formed with a groove on the outermost surface thereof, a rOW of balls arranged between said surfaces and running in said grooves, and means for retaining said balls in position, said outer race ring being of the same formed at the lowermost part thereof with tively movable in assembling the bearing to a cirouinferentially extended opening which bring said openings into coincidence. extends from the bottom of the groove out- In testimony whereof I have hereunto set Wardly and downwardly to the side wall of my hand in presence of two subscribing Wit- 5 the1 ring, iillllfllgllllout the entirel oircumferennesses.

tia lengt 0 t e opening, t e inner ring being provided with an opening extending CARL GUSTAF R U in axial direction from the bottom of the Witnesses: groove outwardly to the periphery of the ERIC MIDHOLM, 10 side Wall of the ring, said rings being rela- ILsn LINDUN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

